Polypropylene  labels  ( white and silvery ) The material ls thin and will offer a medium to long adhesion to indoor assets and medium term life to out door assets. The material tends to go brittle with time and a user should look at replacing the labels every 3-5 years. This media is best suited to low priced asset and item marking. The silver version is good for item marking but is not good for barcodeing  due to its refractive nature.